The most delicious dinner ever! I could eat it every day

Ingredients:
1 onion
cherry tomato 150g (5oz)
oil
minced meat 300g (10.6oz)
2 cloves of garlic
tomato paste 400ml (1.7cups) /14oz
vegeta (or salt) 1tsp
salt 1tsp
dried parsley 1tsp
oregano 1tsp
black pepper
water
oil
salt 1tbsp
spaghetti 250g (8.8oz)